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Support for booting into kdb on arm platforms.
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Authored by skibo on Feb 18 2018, 6:51 PM.
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Details

Summary

This diff supports entering kdb early in the boot when the RB_KDB flag is set on arm platforms.

While trying to get this to work, I discovered that machdep_boot.c doesn’t include opt_ddb.h and so the kernel symbols weren’t getting loaded into the debugger early in the boot (see the call to db_fetch_ksymtab() in freebsd_parse_boot_param()). I have never noticed any problems with symbols in kdb before. I wonder how those symbols eventually get loaded and wonder if now I'm calling it twice.

Test Plan

Tested on Zedboard and in qemu.

Diff Detail

Repository
rS FreeBSD src repository - subversion
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Event Timeline

ian added a subscriber: ian.

Looks good, and works fine on my wandboard.

This revision is now accepted and ready to land.Feb 25 2018, 6:39 PM
This revision was automatically updated to reflect the committed changes.